Keywords: SDH STM1 Frame.JPG Frame structure of an SDH STM1 frame Transferred from http //en wikipedia org en wikipedia 2008-04-12 Original uploader was Motleyfool at http //en wikipedia org en wikipedia Later version s were uploaded by Slidersv at http //en wikipedia org en wikipedia Released into the public domain by the author Please check whether there are 8 rows or 9 rows in SDH_STM1_Frame As per me it should be 9 rows 3+1+5 Motleyfool en File SDH STM1 Frame svg original upload log page en wikipedia SDH_STM1_Frame JPG 2008-04-12 19 46 Slidersv 766×375× 51773 bytes <nowiki>I have drawn this picture myself to improve quality and correct a detail 5 rows for MSOH instead of 4 Corrected micro sign as well </nowiki> 2005-09-01 05 35 Motleyfool 595×339× 16495 bytes <nowiki>Frame structure of an SDH STM1 frame</nowiki> SONET/SDH |